F5, Inc.
US ˙ NasdaqGS ˙ US3156161024

SecurityFFIV / F5, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership735,834 shares
Latest Disclosed Value $ 212,898,851
Northern Trust Corp reports 22.37% decrease in ownership of FFIV / F5, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 735,834 shares of F5, Inc. (US:FFIV) valued at $212,898,851 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 947,825 shares of F5, Inc.. This represents a change in shares of -22.37% during the quarter. The current value of the position is $300,705,922 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F F5 COM 315616102 735,834 -211,991 -22.37 212,899 -12.00 0.0058
2026-02-17 2025-12-31 13F F5 COM 315616102 947,825 -69,890 -6.87 241,942 -26.44 0.0064
2025-11-14 2025-09-30 13F F5 COM 315616102 1,017,715 25,052 2.52 328,915 12.58 0.0421
2025-08-13 2025-06-30 13F F5 COM 315616102 992,663 -62,038 -5.88 292,161 4.03 0.0402
2025-05-13 2025-03-31 13F F5 COM 315616102 1,054,701 141,680 15.52 280,835 22.32 0.0417
2025-02-14 2024-12-31 13F F5 COM 315616102 913,021 251,534 38.03 229,597 57.63 0.0325
2024-11-13 2024-09-30 13F F5 COM 315616102 661,487 -88,043 -11.75 145,659 12.83 0.0238
2024-08-14 2024-06-30 13F F5 COM 315616102 749,530 69,097 10.15 129,092 0.07 0.0218
2024-05-14 2024-03-31 13F F5 COM 315616102 680,433 -19,780 -2.82 129,003 2.94 0.0223
2024-02-13 2023-12-31 13F F5 COM 315616102 700,213 -9,666 -1.36 125,324 9.56 0.0227
2023-11-13 2023-09-30 13F F5 COM 315616102 709,879 43,704 6.56 114,390 17.40 0.0222
2023-08-11 2023-06-30 13F F5 COM 315616102 666,175 -19,110 -2.79 97,435 -2.41 0.0187
2023-05-15 2023-03-31 13F F5 COM 315616102 685,285 -106 -0.02 99,839 1.50 0.0198
2023-02-13 2022-12-31 13F F5 COM 315616102 685,391 15,862 2.37 98,360 1.51 0.0206
2022-11-14 2022-09-30 13F F5 COM 315616102 669,529 -7,950 -1.17 96,900 -6.54 0.0221
2022-08-12 2022-06-30 13F F5 COM 315616102 677,479 -12,619 -1.83 103,681 -28.10 0.0222
2022-05-13 2022-03-31 13F F5 COM 315616102 690,098 -13,958 -1.98 144,197 -16.31 0.0254
2022-02-08 2021-12-31 13F F5 COM 315616102 704,056 -3,073 -0.43 172,289 22.57 0.0282
2021-11-15 2021-09-30 13F F5 NETWORKS COM 315616102 707,129 -23,288 -3.19 140,563 3.10 0.0249
2021-08-13 2021-06-30 13F F5 NETWORKS COM 315616102 730,417 15,694 2.20 136,339 -8.56 0.0240
2021-05-12 2021-03-31 13F F5 NETWORKS COM 315616102 714,723 -13,348 -1.83 149,105 16.40 0.0277
2021-02-11 2020-12-31 13F F5 NETWORKS COM 315616102 728,071 -10,355 -1.40 128,097 41.30 0.0250
2020-11-16 2020-09-30 13F F5 NETWORKS COM 315616102 738,426 -27,487 -3.59 90,657 -15.14 0.0199
2020-08-14 2020-06-30 13F F5 NETWORKS COM 315616102 765,913 -36,887 -4.59 106,829 24.80 0.0253
2020-05-14 2020-03-31 13F F5 NETWORKS COM 315616102 802,800 8,109 1.02 85,603 -22.87 0.0246
2020-02-14 2019-12-31 13F F5 NETWORKS COM 315616102 794,691 18,945 2.44 110,979 1.88 0.0248
2019-11-13 2019-09-30 13F F5 NETWORKS COM 315616102 775,746 -15,452 -1.95 108,931 -5.46 0.0261
2019-08-13 2019-06-30 13F F5 NETWORKS COM 315616102 791,198 13,820 1.78 115,223 -5.55 0.0273
2019-05-13 2019-03-31 13F F5 NETWORKS COM 315616102 777,378 -124,074 -13.76 121,994 -16.48 0.0301
2019-02-12 2018-12-31 13F F5 NETWORKS COM 315616102 901,452 56,674 6.71 146,061 -13.30 0.0410
2018-11-14 2018-09-30 13F F5 NETWORKS COM 315616102 844,778 -21,672 -2.50 168,466 12.75 0.0412
2018-09-18 2018-06-30 13F/A-1 F5 NETWORKS COM 315616102 866,450 99,723 13.01 149,419 34.76 0.0379
2018-08-14 2018-06-30 13F F5 NETWORKS COM 315616102 870,777 104,050 150,165
2018-05-09 2018-03-31 13F F5 NETWORKS COM 315616102 766,727 -8,628 -1.11 110,876 8.98 0.0288
2018-02-14 2017-12-31 13F F5 NETWORKS COM 315616102 775,355 -27,927 -3.48 101,742 5.06 0.0258
2017-11-13 2017-09-30 13F F5 NETWORKS COM 315616102 803,282 38,785 5.07 96,844 -0.30 0.0252
2017-08-11 2017-06-30 13F F5 NETWORKS COM 315616102 764,497 -2,456 -0.32 97,137 -11.16 0.0272
2017-05-12 2017-03-31 13F F5 NETWORKS COM 315616102 766,953 13,930 1.85 109,344 0.34 0.0315
2017-02-13 2016-12-31 13F F5 NETWORKS COM 315616102 753,023 -13,506 -1.76 108,978 14.07 0.0334
2016-11-09 2016-09-30 13F F5 NETWORKS COM 315616102 766,529 -3,448 -0.45 95,540 9.00 0.0298
2016-08-12 2016-06-30 13F F5 NETWORKS COM 315616102 769,977 -17,015 -2.16 87,654 4.73 0.0285
2016-08-19 2016-03-31 13F/A-1 F5 NETWORKS COM 315616102 786,992 -22,149 -2.74 83,695 6.68 0.0278
2016-05-13 2016-03-31 13F F5 Networks COMM 315616102 786,989 83,302
2016-02-12 2015-12-31 13F F5 Networks COMM 315616102 809,141 -79,413 -8.94 78,454 -23.75 0.0260
2015-11-12 2015-09-30 13F F5 Networks COMM 315616102 888,554 52,374 6.26 102,895 2.25 0.0343
2015-08-13 2015-06-30 13F F5 NETWORKS COM 315616102 836,180 -45,353 -5.14 100,634 -0.68 0.0682
2015-08-13 2015-06-30 13F F5 Networks COMM 031561610 40,404 -841,129 4,863 0.0033
2015-05-14 2015-03-31 13F F5 Networks COMM 315616102 881,533 -53,116 -5.68 101,323 -16.91 0.0305
2015-02-12 2014-12-31 13F F5 Networks COM 315616102 934,649 -23,420 -2.44 121,939 7.19 0.0368
2014-11-13 2014-09-30 13F F5 Networks COMM 315616102 958,069 -20,224 -2.07 113,761 4.35 0.0357
2014-08-14 2014-06-30 13F F5 NETWORKS com 315616102 978,293 -92,946 -8.68 109,020 -4.56 0.0340
2014-05-14 2014-03-31 13F F5 NETWORKS COMM 315616102 1,071,239 38,725 3.75 114,227 21.76 0.0359
2014-02-21 2013-12-31 13F/A-1 F5 NETWORKS COM 315616102 1,032,514 -21,297 -2.02 93,815 3.75 0.0301
2014-02-12 2013-12-31 13F F5 NETWORKS COM 315616102 1,032,514 93,815
2013-11-13 2013-09-30 13F F5 NETWORKS COM 315616102 1,053,811 -108,060 -9.30 90,426 13.12 0.0318
2013-08-09 2013-06-30 13F F5 NETWORKS COM 315616102 1,161,871 1,161,871 79,937 0.0290
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.